318 Rebuild suggestions?

Yeah he is a trusted source on my auto work but I did question his suggestion for a HV pump. Every now & then when I stop at a light the oil pressure gauage dips, a quick rev brings it back up, I know it's good on oil so I figured that can be addressed during the rebuild. I figured this timeframe during December, right before the icy weather sets in (when I'd like to have the Dakota ready for) but it'll be a whole month I have free until winter term in January